<div *ngIf="hero">
  <h2>{{hero.name | uppercase}} Details</h2>
  <div>
    <span>id:</span> {{hero.id}}
  </div>
  <div>
    <label>name:
      <input [(ngModel)]="hero.name" placeholder="name" />
    </label>
  </div>
  <button (click)="save()">save</button>
  <button (click)="delete()">delete</button>
  <button (click)="goBack()">go back</button>
</div>
